Any type of moisture including your breath.
if you mean the rear vent window it could be a loose wire if you have power and ground then the window motor is bad
Having it on "PARKING"
vacuum leak
A serious vacuum leak could cause that.
First thing I would do is change the pad to a good quality product.See "Related Questions" below for more
When I bought my ford windstar it was used and later discovered the sway bar needed replacing. I am not saying that this is your problem but it is worth checking out also check you motor mounts, tires.
Diod you check front brake pads
Maybe a head gasket?
I would have the alternator tested. If the alternator is over charging the battery then it is just cooking it.
COLD
weather and climate changes cause difference in size of crystals. or erosion
the most common thing is a faulty multifunction switch.